AceShowbiz -

Maci Bookout is having a new addition to her growing family. She is expecting a baby girl with boyfriend of two years Taylor McKinney. "We still can't believe it!" she told the latest issue of In Touch Weekly. "It was a huge shock, but we are very excited. I'm due in June."

The 23-year-old reality TV star is already mom to 6-year-old son Bentley. She gave birth to her first child in 2009 on the first season of MTV's "16 and Pregnant". It's her child with ex Ryan Edwards whom she later split from on the spin-off show "Teen Mom".

After giving birth to Bentley, Maci was diagnosed with polycystic ovary syndrome (PCOS), which made it difficult for her to get pregnant. "We were very concerned that we might not be able to have a child of our own, so we talked about adoption" she said. "I knew my chances [of getting pregnant] were very low."

"This baby is such a blessing. I'm calling her my miracle baby," she added. "Bentley is beyond excited. He's already nicknamed the baby Bubby." Meanwhile, "I'm scared!" the young mom admitted. "I don't know how to raise a girl, plus I'm not a big fan of pink stuff."

Aside from a baby, wedding bells are also on the way. "Before I got pregnant, we talked heavily about marriage, and we still do," she opened up. "But I don't wanna be a pregnant bride. That would be way to stressful. Plus, I want to be able to have fun at my wedding."